TY  - JOUR
AU  - Pabst, Florian
AU  - Kraus, Jennifer
AU  - Kloth, Sebastian
AU  - Steinrücken, Elisa
AU  - Kruteva, Margarita
AU  - Radulescu, Aurel
AU  - Vogel, Michael
AU  - Blochowicz, Thomas
TI  - Evidence of supercoolable nanoscale water clusters in an amorphous ionic liquid matrix
JO  - The journal of chemical physics
VL  - 155
IS  - 17
SN  - 1089-7690
CY  - Melville, NY
PB  - American Institute of Physics
M1  - FZJ-2021-04076
SP  - 174501
PY  - 2021
AB  - Nanoscale water clusters in an ionic liquid matrix, also called “water pockets,” were previously found in some mixtures of water with ionic liquids containing hydrophilic anions. However, in these systems, at least partial crystallization occurs upon supercooling. In this work, we show for mixtures of 1-butyl-3-methylimidazolium dicyanamide with water that none of the components crystallizes up to a water content of 72 mol. %. The dynamics of the ionic liquid matrix is monitored from above room temperature down to the glass transition by combining depolarized dynamic light scattering with broadband dielectric and nuclear magnetic resonance spectroscopy, revealing that the matrix behaves like a common glass former and stays amorphous in the whole temperature range. Moreover, we demonstrate by a combination of Raman spectroscopy, small angle neutron scattering, and molecular dynamics simulation that, indeed, nanoscale water clusters exist in this mixture
LB  - PUB:(DE-HGF)16
C6  - 34742203
UR  - <Go to ISI:>//WOS:000715769800006
DO  - DOI:10.1063/5.0066180
UR  - https://juser.fz-juelich.de/record/902167
ER  -